Machine-gun.



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og oflvn/ l QDyY A. A. K. HEINEMA NN.

MACHINE GUN.

APPLICATION FILED FEB- 25. I914.

Patented Sept. 28, 1915.

2 SHEETS-SHEET I.

Db'liibfl (27, 4 awn A. A. K. HEINEMANN.

MACHINE GUN.

APPLICATION FILED FEB. 25. 1914.

1 1 55,06 1 Patented Sept. 28, 1915.

2 SHEETS-SHEET 2.

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W QQZLW 3 J) UNITED STATES PATENT OFFICE.

AUGUST ALBERT KARL HEINEMANN, OF BERLIN, GERMANY, ASSIGNOR TO DEUTSCHEWAFFEN- UND MUNITIONSFABRIKEN, OF BERLIN, GERMANY.

MACHINE-GUN.

Original application filed August 7, 1913, Serial No. 783,471.

Specification of Letters Patent.

25, 1914. Serial No. 820,806.

7 '0 all whom it may concern:

Be it known that I, AUGUST ALBERT KARL I-IEINEMANN, a citizen of theGerman Empire, residing at Berlin, in the German Empire, have inventedcertain new and useful Improvements in Machine-Guns, of which thefollowing is a specification.

The present'invention relates to improvements in machine guns and refersmore particularly to a muzzle-attachment; the object being to create adevice which is-adapted during firing a shot, to be acted upon indownward direction by the driving gases leaving the muzzle in order tosteady the latter thereby preventing or counteracting the bucking of themuzzle, that is to say, its tendency to jump upward during a shot, anddiminishing the dispersion of the projectiles. Furthermore the saidmuzzle attachment may be used for bearing or supporting the muzzle on acarriage or rest, such as a trivet or the like. And with these ends inview my invention consists in certain novel features of construction andcombinations of parts, as will be hereinafter fully described andpointed out in the claims with reference to the accompanying sheets ofdrawings in which Figure l is a longitudinal elevation of a hand machinegun provided with a muzzle attachment made in accordance with andembodying my invention; Fig. 2 shows on a larger scale a centralvertical longitudinal section through the front part'of the hand machinegun and the muzzle attachment; Fig. 3 is a vertical cross section on theline III (Fig. 2) and Fig. 1 is a lateral view of the muzzle attachmentas it appears after the removal from the gun.

Similar numerals of reference refer to similar parts throughout theseveral figures.

Into the front Wall 35 of the water-jacket 6 of the hand machine gun isscrewed a sleeve-like structure 36-which surrounds the muzzle of thebarrel 5 and is provided beneath the muzzle with a trough shapedprojection 36 The sleeve 36 may be provided in its upper part, ifdesired with perforations 36 constituting outlets or passages for thedriving gases leaving the barrel. Upon the recessed front end of thesleeve is mounted a ring 37. After the sleeve has been screwed intoposition in the Wall 35 this ring is located between this wall and acollar 36 on the sleeve 36. v The ring has two lateral or more properlydownward directed eyelets 38, 39 by means of which it may be pivotallyfastened on a three-legged rest or the like as shown by dotted lines inFig. 3, or on a suitable arm or support extending from a gun-carriagenot shown.

\Vhen firing a shot the driving gases issu ing from the bore of thebarrel can freely escape upward, whereas in downward direction they arestriking against the projection 36 forming and acting somewhat like abafiie-plate to cause the said gases to exert a downward pressure uponthe muzzle attachment; Owing to this downward pressure the muzzle of thehand machine gun, when firing a shot, will be prevented from bucking orheld down, when supported, on its rest, carriage or the like, wherebythe dispersion of projectiles is greatly reduced.

While I have shown and described my muzzle attachment as applied to ahand machine gun, it is, however, evident that this novel device can beused on any gun.

As many changes 'might be made in the construction and relativearrangement of the said muzzle attachment forming a bafiie-device forthe propelling gases underneath the muzzle without involving a departurefrom the spirit of my invention, I would have it understood that I donot limit myself to the exact construction shown and described, butconsider myself at liberty to make such changes as fall within the scopeof my invention.

Subject-matters of invention disclosed herein, but not claimed form thesubjectmatters of my prior application Ser. No. 783471, filed Aug. 7th1913 and of two other contemporary divisional applications.

I claim:

1. In a gun, the combination of a muzzle, and means located adjacent tothe discharge end thereof and arranged to permit a free expansion in onedirection of the gases escaping from said muzzle after firing a shot andto arrest the expansion of said gases in the opposite direction wherebya bucking of the muzzle is prevented.

2. In a gun, the combination of a muzzle and means located beneath thesame and extending forwardly beyond the discharge end of said muzzle,said means being arranged to permit a free expansion in an upwarddirection of the gases escaping from said muzzle after firing a shot andto arrest the expansion of said gases in a downward direction whereby a.bucking of the muzzle is prevented.

3. In a gun, the combination of a muzzle, a sleeve surrounding saidmuzzle at a distance at the discharge end thereof and a trough-shapedprojection extending from said sleeve below and in front of saiddischarge end against which the gases escaping from said muzzle afterfiring a shot are arranged to impact whereby a bucking of the muzzle isprevented.

r. In a gun, the combination of a muzzle, a detachable sleevesurrounding said muzzle at a distance at the discharge end thereof andprovided in its upper portion with a radially disposed escape apertureand a trough-shaped projection extending from said sleeve below and infront of said discharge end against which the gases escaping from saidmuzzle after firing a shot are adapted to impact whereby bucking of themuzzle is prevented, said gases being free to escape through saidaperture.

'5. In a gun, the combination of a muzzle,

a projection located below and in front of the discharge end thereof,sald projection being arranged to permit a free expansion in an upwarddirection of the gases escaping from said muzzle after firing a shot andto arrest the expansion of said gases in a downward direction wherebybucking of the muzzle is prevented, means for connecting said projectionwith said muzzle, a ring located on said means and pivotal connectingmeans extending from said ring.

(3. In a gun, the combination of a muzzle, a jacket on the same, asleeve adapted to be screwed into the front wall of said jacket, saidsleeve being spaced from and surrounding said muzzle at the dischargeend thereof, a trough-shaped projection extending from said sleevebelowand in front of said discharge end against which the gases escaping fromthe muzzle after firing a shot are .adapted to impact whereby a buckingof the muzzle is prevented and pivotal connecting means carried by saidsleeve.

AUGUST ALBERT KARL HEINEMANN. lVitnesses \VoLnEMAn HAUrT, HENRY HASPER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

